Purine and Benzodiazepine analogues are considered of privileged structures in medicinal chemistry and often shown to possess a wide range of interesting pharmacological activities.

• 嘌呤 (purine) 和苯并二氮卓 (benzodiazepine) 都是被确定为“特权结构” (privileged structures) 的两类化合物，具有极其广泛的药理活性。